Question
I have a rain bird esp-6si.  The first station stays on and will not move to the next station.  It worked fine for weeks and all of a sudden just did this one day.  It wouldn't even turn off until we turned if off at the valve.

Answer
Hi Joei

Check the controller programing, make sure you are on the right program A or B. If you have a very long time assigned to the zone 1 (the max is 99 minutes) correct it and  check for the time assigned to the others stations.

Run Test Program
The ESP-Si controller has a built-in test program that will run each station in sequence for two minutes.
You can use this program to check out the operation of all the sprinklers in the system.
?Turn the dial to AUTO.
?Press both arrow buttons at the same time and hold them down until...
?The display shows the first station number and two minutes of watering time remaining. The
controller will run each station for two minutes and then return to AUTO mode to await the next
scheduled start time. Any station that has been set to a 0 run time will be skipped during the
test program.

Was any electric issue the day this start?

Regards
Guillermo